Filter getFacetFilter() {
if (facetFilter == null) {
BooleanQuery boolQuery = new BooleanQuery();
for (FacetSelectionImpl selection : facetSelection.values()) {
if (!selection.getFacetList().isEmpty()) {
Query selectionGroupQuery = createSelectionGroupQuery(selection);
boolQuery.add(selectionGroupQuery, BooleanClause.Occur.MUST);
}
}
if (boolQuery.getClauses().length > 0) {
this.facetFilter = new QueryWrapperFilter(boolQuery);
}
}
return facetFilter;
}
private Query createSelectionGroupQuery(FacetSelectionImpl selection) {
BooleanQuery orQuery = new BooleanQuery();
for (Facet facet : selection.getFacetList()) {
orQuery.add(facet.getFacetQuery(), BooleanClause.Occur.SHOULD);
}
return orQuery;
}
